Valve compressor



June 4, 1963 c. v. BINKLEY VALVE COMPRESSOR 3 Sheets-Sheet 1 Filed Sept. 18, 1961 INVENTOR.

CALEB V. BINKLE Y ATTORNEY June 4, 1963 c. v. BINKLEY 3,091,839

VALVE COMPRESSOR Filed Sept. 18, 1961 3 Sheets-S set 2 INVENTOIL FIG. 2 CALEB v. BINKLEY ATTORNEY June 4, 1963 c. v. BINKLEY VALVE COMPRESSOR 3 Sheets-Sheet 5 Filed Sept. 18, 1961 INVENTOR. CALEB V. BINKLE Y WW.

ATTORNEY United States Patent 3,091,839 VALVE COMPRESSOR Caleb V. Binkley, 247 Betz Road, Columbus, Ohio Filed Sept. 18, 1961, Ser. No. 138,753 6 Claims. (Cl. 29-217) The invention disclosed and claimed in this application relates to valve spring com ressors for diesel engines.

Heretofore many types of devices for the compression of valve springs for automobile engines, etc. have been designed and patented, but so far as I know, no eflicient device has been designed for the handling of the valve springs of diesel engines. The handling of the springs according to the present custom individually is difficult and time consuming.

The purpose of the device which I have invented is to compress each valve spring individually and to hold it in a steady position while removing or replacing the keeper on the valve stem. There are four springs to each cylinder head of diesel engines and therefore 64 springs to a 16 cylinder engine. This needs to be done with just enough side play to remove badly worn keepers from the tapered cups which hold them to the valve stem. Often both are badly worn and with devices heretofore used the operation of removing the keepers and replacing them is very diflicult, requiring two men to perform the operation. My device is especially useful in repair work and in the overhauling of diesel engines. It has been used on the assembly line in repair work.

One object of my invention is the provision of an ellicient device for the compression of valve springs for diesel engines.

A further object of my invention is the provision of such a device designed to be secured to the rocker arm studs of the cylinder head and easily adjusted so that an operator may easily compress each of the four valve springs thereof individually and in turn so that the keepers of the valve stems may be removed and replaced.

Further objects and features should be apparent from the following specification and claims when considered in connection with the accompanying drawings illustrating in an embodiment of my invention.

In the drawings:

FIG. 1 is a view in perspective of the top of a cylinder of a diesel motor.

FIG. 2 is a view in perspective similar to FIG. 1, but showing the injector, fuel lines, injector yoke, fuel line block, rocker arms, and lashers, etc. removed and showing my valve spring compressor secured to the rocker arm studs and with the operating screw set in the hole in which one of the lashers is normally set; and

FIG. 3 is an exploded view showing parts of my valve spring compressor.

Referring to the drawings for a detailed description of the invention it may be seen that l have shown in FIG. 1, a cylinder head A for a diesel engine, the head A having rocker arm studs B and C; bases for rocker arms D and B; an injector F; an injector yoke G; rocker arms H, I and K; and lashers L and M. It is provided with fuel lines N and P, a fuel line block therefore Q, and valve springs R, S, T and U. Keepers are provided for the valve springs.

In FIG. 2 the rocker arms H, I and K have been removed as have also the lashers L and M, the injector F, the injector yoke G, the fuel lines N and P and the fuel line block Q. My improved valve spring compressor 11 is shown resting on the rocker arm bases D and E and positioned on the rocker arm studs B and C and secured thereto by nuts 12 and 13.

In using my improved device I do not have to remove the injector, injector yoke, the fuel lines or the fuel line the individual 3,091,839 Patented June 4, 1963 'ice block, but in the drawing 1 have shown them removed to prevent confusion. It is necessary to remove the rocker arms and lashers. The cup is thin enough, however, to clear the fuel lines, the fuel line block, and the injector and inject r yoke. My improved valve spring compressor 11 consists first of a main base element or bar 14 resting on the rocker arm bases D and E and secured to the rocker arm studs by the nuts 12 and 13. This base element 14 has secured on one side (as for example, by welding) a pair of upwardly extending arms or hangers 17 and 18. On the opposite side it has an extension 21 secured to it, as for example, by welding. The hangers 17 and 18 are formed with openings 22 and 23 for purposes later to be described. The extension 21 is formed with the threaded openings 24 and 25.

There is also associated with the base 14 a sliding holddovvn bar 26 which is at times secured thereto as explained below. Extending through the holes 22 and 23 is a pivot rod 31 which is normally held in position by cotter pins 32 and 33. The hold-down bar 26 is formed with a lateral opening 34 and with vertical openings 35 and 36. The pivot rod 3-1 extends through opening 34 and the bar 26 thus pivots on the rod 31. The bar 26 may also at times slide from left to right or vice versa on said rod. It may be (and is when set up for operation) locked in position against either sliding or pivoted movement by a cap screw 37 extending through the hole 35 and into either of the threaded holes 24 or 2.5.

When set up for operation, a control screw 41 is provided. This screw is formed at its lower end with a nut 42 which has its lower surface 43 ground to a bearing fitting exactly in the lasher holes L and My. The screw 41 may thus be rotated. The screw is provided near its upper end with spacer nut 44 and at its extreme upper end with a hexagonal head 45 by means of which it may be rotated. it is threaded substantially throughout its length. Positioned at a point intermediate the nuts 42 and 44 are a pair of intermediate spaced lock nuts 46 and 47 and between the nuts 46 and 47 there is provided a cup holder arm 51 having an opening through which the screw 41 extends and provided with a cup 52 which fits over (when properly positioned) any one of valve springs R, S, T and U. The size of the opening through the cup 52 is such that the valve keepers may be removed through such opening.

The screw 41 is operated to move the cup 52 up and down. To that end it is set vertically in the same hole (i.e. L or M that the lasher (L or M) normally is seated. The hold-down bar 26 holds the screw 41 firmly in position.

The operation of the device is relatively easy. Assume that it is desirable to replace worn keepers, etc. of the valve springs of a diesel motor engine cylinder head. The rocker arms, injectors, etc. (e.g. H, I and K) are removed as are the lashers L and M. Then the main base bar 14 is placed over the rocker arm studs B and C so that it rests on the rocker arm bases D and E and so that the studs B and C extend through the openings 15 and 16. Then it (the base bar 14) is secured by the nuts 12 and 13. Next the hold-down bar 26 is laid on the base bar 14 so that its opening 34 is aligned with the openings 22 and 23 of hangers 17 and 18, and the pivot rod 31 is inserted through the three aligned openings 22, 23 and 34. Assuming the right hand springs T and U are to be serviced, the lower end of the control screw 41 is inserted in the lasher hole L and the upper end is inserted through the opening 36 of the holddown bar 26. The nuts 43, 44, 46 and 47 are properly adjusted on the screw so that the cup is well above the tops of the springs T and U and so that the nut 44 will bear against the underside of the hold-down bar 26 and the bearing of nut 43 will be in the lasher hole L The hole 35 of the bar 26 is aligned with the opening 25. Then the cap screw 37 is used to secure the parts in position, the nuts 43, 44, 46 and 47 being adjusted further if required. The nuts 46 and 47 are locked to cup holder arm 51 so that on rotation of the screw 41 all three move up and down as a unit. The cup 52 is positioned over either the spring T or the spring U as desired. The screw 41 is rotated in the proper direction by the hex head 45 causing the nuts 46 and 47 and the cup 52 to descend on the spring over which the cup is positioned, thus compressing the spring. the keeper and/or other worn parts are replaced. Reverse turning of the screw 41 by the hex 45 raises the cup 52 and nuts 46 and 47 and releases the spring. The cup 52 and the arm 51 are then turned 180 on the screw 41 and the cup is again caused to descend by the same process so that the other spring (U or T) is serviced.

When the cup 52 has again been raised, the cap screw 37 is removed, the screw 41 and the hold-down bar 26 are moved to the left, the bar 26 sliding on the pivot rod 31, and the bearing 42 is placed in the lasher hole M The cap screw 37 is inserted through the hole 35 and secured in the threaded opening 24, thus again securing the parts together. The servicing operation is then repeated for springs R and S.

The placing of the bottom of the screw 41 in the lasher holes L and M centers the screw 41 exactly between the springs U and T and between springs S and R respecdeep. The inside of the drill cutting is ,5 of the top side. This gives clearance for hands while removing and replacing keeper which has heretofore socket and ratchet can be been a major problem. The outside of the cup is kept to about 4 thickness so that it is unnecessary to remove the fuel line block from the injector.

The hold-down bar is shown as one piece of material. It may be either one piece or compo-site.

It is to be understood that the above described embodiments of my invention are for the purpose of illustration only and various changes may be made without departing from the spirit and scope of my invention.

I claim:

1. For use with a cylinder head of a diesel engine having a rocker arm base, a pair of rocker arm studs and springs, arranged symmetrically on said head, a valve spring compressor comprising a base bar, means for securing said base bar to said rocker arm studs, a pivoted and sliding hold-down bar pivotally and slidably mounted on said base bar, a control screw adaptder head and having its upper end rotatably secured in said hold-down bar, a valve spring cup arm and valve spring cup positioned on and threadedly secured on said screw, and means for rotating said screw and for causing said cup arm and cup to move downwards or upwards as desired.

2. The structure of claim 1 in which the base bar has a pair of hangers having apertures through which a rod extends and in which the hold-down bar also has an aperture and the rod also extends through said aperture so that the hold-down bar may pivot and slide on said rod.

3. The structure of claim 1 in which the valve spring cup arm is threadedly secured on said screw by a pair of lock nuts.

4. The structure of claim 1 in which the lower end of the control screw is adapted to be set in one of the lasher seats.

5. The structure of claim I in which the valve spring cup is formed with an opening through which the valve spring keeper may be removed.

6. The structure of claim 1 in which the means for rotating the screw is a hexagonal head thereon.

References Cited in the file of this patent UNITED STATES PATENTS 1,463,709 Martin July 31, 1923 1,549,230 Stevenson Aug. 11, 1925 FOREIGN PATENTS 528,224 Great Britain Oct. 24, 1940 

1. FOR USE WITH A CYLINDER HEAD OF A DIESEL ENGINE HAVING A ROCKER ARM BASE, A PAIR OF ROCKER ARM STUDS AND A PLURALITY OF VALVE SPRINGS, ARRANGED SYMMETRICALLY ON SAID CUP ARM AND CUP TO MOVE DOWNWARDS OR UPWARDS AS BAR, MEANS FOR SECURING SAID BASE BAR TO SAID ROCKER ARM STUDS, A PIVOTED AND SLIDING HOLD-DOWN BAR PIVOTALLY AND SLIDABLY MOUNTED ON SAID BASE BAR, A CONTROL SCREW ADAPTED TO HAVE ITS LOWER END POSITIONED TO BEAR ON SAID CYLINDER HEAD AND HAVING ITS UPPER END ROTATABLY SECURED IN SAID HOLD-DOWN BAR, A VALVE SPRING CUP ARM AND VALVE SPRING CUP POSITIONED ON AND THREADEDLY SECURED ON SAID SCREW, AND MEANS FOR ROTATING SAID SCREW AND FOR CAUSING SAID CUP ARM AND CUP TO MOVE DOWNWARDS OR UPWARDS AS DESIRED. 